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target/arm: Do not reject rt == rt2 for strexd

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There was too much cut and paste between ldrexd and strexd,
as ldrexd does prohibit two output registers the same.

Fixes: af288228995

Backports commit 655b02646dc175dc10666459b0a1e4346fc8d46a from qemu
This commit is contained in:
Richard Henderson 2019-11-21 16:17:32 -05:00 committed by Lioncash
parent 28e90d563a
commit fa7a6a5d91
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GPG key ID: 4E3C3CC1031BA9C7
1 changed files with 1 additions and 1 deletions
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qemu/target/arm/translate.c
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@ -9213,7 +9213,7 @@ static bool op_strex(DisasContext *s, arg_STREX *a, MemOp mop, bool rel)
|| (s->thumb && (a->rd == 13 || a->rt == 13))
|| (mop == MO_64
&& (a->rt2 == 15
|| a->rd == a->rt2 || a->rt == a->rt2
|| a->rd == a->rt2
|| (s->thumb && a->rt2 == 13)))) {
unallocated_encoding(s);
return true;